Mulino, OR – March 18, 2014 – Sunstone Circuits®, the leading printed circuit board (PCB) prototype solutions provider, has announced the launch of a new and improved PCBExpress® Quickturn Quote Form. With the new interactive quote form, customers needing a fast turnaround on 2- to 6-layer printed circuit boards will be able to quote and order PCBs even more quickly on the newly redesigned sunstone.com.

Sunstone Circuits®, the leading printed circuit board (PCB) prototype solutions provider, has launched a new corporate website dedicated to making the PCB design engineer’s life easier, from project quote to PCB delivery. The new website, which is cleaner in design and easier for the user to navigate, features streamlined navigation and user content, including whitepapers, videos, and customer testimonials.

Visitors to the new website will notice a new “look and feel,” more comprehensive search functionality, ...

Printed circuit boards typically have a pre-finished copper weight of 0.5 oz, 1.0 oz, or 2.0 oz on the outer layers. The PCB manufacturing process consists of etching the copper to produce the circuitry (traces, SMT pads, via pads, etc.). The copper etching process will produce a trapezoidal cross section (see figure below) where the top of the SMT pad will be smaller than the bottom.

I have a strong doubt regarding with internal planes, this is what is happening: I have a panelized of two different PCB with 4 layer each one. The PCB A has 2 internal layers defined as a plane, the PCB B has 2 internal layers: the first one is defined as a plane and the other one is a layer ( which allows me to trace routes on it).

For those Eagle users who are looking for a circuit simulation solution Eagle offers a LTspice IV-EAGLE ULP. This ulp allows you to export your Eagle schematic to a format that can be imported into LT Spice. If you are already an LTspice user you can export your schematic in .asc format and import it into Eagle to complete your layout. Here is the Eagle page with the full detail.

The Rogers material that we offer on our E1’s is .020 +/- .0015 over the dielectric (without copper). So, the dielectric could technically be as thin as .0185, or as thick as .0215, and still be within tolerance.